diff --git a/People b/People index 8be8b6d..92d1ea4 100644 --- a/People +++ b/People @@ -25,3 +25,6 @@ CHARLES Thibaut: Xian Stannard Fixing some typos in the man page! + +Andre Crone + Suggested the __WIRING_PI.H__ round wiringPi.h diff --git a/build b/build index 048ebb3..776c756 100755 --- a/build +++ b/build @@ -15,17 +15,19 @@ check-make-ok() if [ x$1 = "xclean" ]; then cd wiringPi - echo -n "wiringPi: " ; make clean + echo -n "wiringPi: " ; make clean cd ../devLib - echo -n "DevLib: " ; make clean + echo -n "DevLib: " ; make clean cd ../gpio - echo -n "gpio: " ; make clean + echo -n "gpio: " ; make clean cd ../examples - echo -n "Examples: " ; make clean + echo -n "Examples: " ; make clean cd Gertboard - echo -n "Gertboard: " ; make clean + echo -n "Gertboard: " ; make clean cd ../PiFace - echo -n "PiFace: " ; make clean + echo -n "PiFace: " ; make clean + cd ../q2w + echo -n "Quick2Wire: " ; make clean exit fi @@ -78,3 +80,8 @@ fi echo echo All Done. +echo "" +echo "NOTE: This is wiringPi v2, and if you need to use the lcd, Piface," +echo " Gertboard, MaxDetext, etc. routines then you must change your" +echo " compile scripts to add -lwiringPiDev" +echo "" diff --git a/examples/Makefile b/examples/Makefile index f1e1725..8cc256f 100644 --- a/examples/Makefile +++ b/examples/Makefile @@ -38,7 +38,7 @@ LDLIBS = -lwiringPi -lwiringPiDev -lpthread -lm SRC = blink.c blink8.c blink12.c \ pwm.c \ speed.c wfi.c isr.c isr-osc.c \ - lcd.c clock.c \ + lcd.c lcd-adafruit.c clock.c \ nes.c \ softPwm.c softTone.c \ delayTest.c serialRead.c serialTest.c okLed.c ds1302.c \ @@ -75,6 +75,10 @@ lcd: lcd.o @echo [link] @$(CC) -o $@ lcd.o $(LDFLAGS) $(LDLIBS) +lcd-adafruit: lcd-adafruit.o + @echo [link] + @$(CC) -o $@ lcd-adafruit.o $(LDFLAGS) $(LDLIBS) + clock: clock.o @echo [link] @$(CC) -o $@ clock.o $(LDFLAGS) $(LDLIBS) diff --git a/examples/lcd-adafruit.c b/examples/lcd-adafruit.c new file mode 100644 index 0000000..47c9b9b --- /dev/null +++ b/examples/lcd-adafruit.c @@ -0,0 +1,347 @@ +/* + * lcd-adafruit.c: + * Text-based LCD driver test code + * This is designed to drive the Adafruit RGB LCD Plate + * with the additional 5 buttons for the Raspberry Pi + * + * Copyright (c) 2012-2013 Gordon Henderson. + *********************************************************************** + * This file is part of wiringPi: + * https://projects.drogon.net/raspberry-pi/wiringpi/ + * + * wiringPi is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * wiringPi is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with wiringPi. If not, see . + *********************************************************************** + */ + +#include +#include +#include +#include +#include + +#include +#include +#include + +#ifndef TRUE +# define TRUE (1==1) +# define FALSE (1==2) +#endif + + +// Defines for the Adafruit Pi LCD interface board + +#define AF_BASE 100 +#define AF_RED (AF_BASE + 6) +#define AF_GREEN (AF_BASE + 7) +#define AF_BLUE (AF_BASE + 8) + +#define AF_E (AF_BASE + 13) +#define AF_RW (AF_BASE + 14) +#define AF_RS (AF_BASE + 15) + +#define AF_DB4 (AF_BASE + 12) +#define AF_DB5 (AF_BASE + 11) +#define AF_DB6 (AF_BASE + 10) +#define AF_DB7 (AF_BASE + 9) + +#define AF_SELECT (AF_BASE + 0) +#define AF_RIGHT (AF_BASE + 1) +#define AF_DOWN (AF_BASE + 2) +#define AF_UP (AF_BASE + 3) +#define AF_LEFT (AF_BASE + 4) + + +// User-Defined character test + +static unsigned char newChar [8] = +{ + 0b00100, + 0b00100, + 0b00000, + 0b00100, + 0b01110, + 0b11011, + 0b11011, + 0b10001, +} ; + +// Global lcd handle: + +static int lcdHandle ; + +/* + * usage: + ********************************************************************************* + */ + +int usage (const char *progName) +{ + fprintf (stderr, "Usage: %s colour\n", progName) ; + return EXIT_FAILURE ; +} + + +/* + * scrollMessage: + ********************************************************************************* + */ + +static const char *message = + " " + "Wiring Pi by Gordon Henderson. HTTP://WIRINGPI.COM/" + " " ; + +void scrollMessage (int line, int width) +{ + char buf [32] ; + static int position = 0 ; + static int timer = 0 ; + + if (millis () < timer) + return ; + + timer = millis () + 200 ; + + strncpy (buf, &message [position], width) ; + buf [width] = 0 ; + lcdPosition (lcdHandle, 0, line) ; + lcdPuts (lcdHandle, buf) ; + + if (++position == (strlen (message) - width)) + position = 0 ; +} + + +/* + * setBacklightColour: + * The colour outputs are inverted. + ********************************************************************************* + */ + +static void setBacklightColour (int colour) +{ + colour &= 7 ; + + digitalWrite (AF_RED, !(colour & 1)) ; + digitalWrite (AF_GREEN, !(colour & 2)) ; + digitalWrite (AF_BLUE, !(colour & 4)) ; +} + + +/* + * adafruitLCDSetup: + * Setup the Adafruit board by making sure the additional pins are + * set to the correct modes, etc. + ********************************************************************************* + */ + +static void adafruitLCDSetup (int colour) +{ + int i ; + +// Backlight LEDs + + pinMode (AF_RED, OUTPUT) ; + pinMode (AF_GREEN, OUTPUT) ; + pinMode (AF_BLUE, OUTPUT) ; + setBacklightColour (colour) ; + +// Input buttons + + for (i = 0 ; i <= 4 ; ++i) + { + pinMode (AF_BASE + i, INPUT) ; + pullUpDnControl (AF_BASE + i, PUD_UP) ; // Enable pull-ups, switches close to 0v + } + +// Control signals + + pinMode (AF_RW, OUTPUT) ; digitalWrite (AF_RW, LOW) ; // Not used with wiringPi - always in write mode + +// The other control pins are initialised with lcdInit () + + lcdHandle = lcdInit (2, 16, 4, AF_RS, AF_E, AF_DB4,AF_DB5,AF_DB6,AF_DB7, 0,0,0,0) ; + + if (lcdHandle < 0) + { + fprintf (stderr, "lcdInit failed\n") ; + exit (EXIT_FAILURE) ; + } +} + + +/* + * waitForEnter: + * On the Adafruit display, wait for the select button + ********************************************************************************* + */ + +static void waitForEnter (void) +{ + printf ("Press SELECT to continue: ") ; fflush (stdout) ; + + while (digitalRead (AF_SELECT) == HIGH) // Wait for push + delay (1) ; + + while (digitalRead (AF_SELECT) == LOW) // Wait for release + delay (1) ; + + printf ("OK\n") ; +} + + +/* + * speedTest: + * Test the update speed of the display + ********************************************************************************* + */ + +static void speedTest (void) +{ + unsigned int start, end, taken ; + int times ; + + lcdClear (lcdHandle) ; + start = millis () ; + for (times = 0 ; times < 10 ; ++times) + { + lcdPuts (lcdHandle, "0123456789ABCDEF") ; + lcdPuts (lcdHandle, "0123456789ABCDEF") ; + } + end = millis () ; + taken = (end - start) / 10; + + lcdClear (lcdHandle) ; + lcdPosition (lcdHandle, 0, 0) ; lcdPrintf (lcdHandle, "Speed: %dmS", taken) ; + lcdPosition (lcdHandle, 0, 1) ; lcdPrintf (lcdHandle, "For full update") ; + + waitForEnter () ; + + lcdClear (lcdHandle) ; + lcdPosition (lcdHandle, 0, 0) ; lcdPrintf (lcdHandle, "Time: %dmS", taken / 32) ; + lcdPosition (lcdHandle, 0, 1) ; lcdPrintf (lcdHandle, "Per character") ; + + waitForEnter () ; + + lcdClear (lcdHandle) ; + lcdPosition (lcdHandle, 0, 0) ; lcdPrintf (lcdHandle, "%d cps...", 32000 / taken) ; + + waitForEnter () ; +} + + +/* + * The works + ********************************************************************************* + */ + +int main (int argc, char *argv[]) +{ + int colour ; + int cols = 16 ; + int waitForRelease = FALSE ; + + struct tm *t ; + time_t tim ; + + char buf [32] ; + + if (argc != 2) + return usage (argv [0]) ; + + printf ("Raspberry Pi Adafruit LCD test\n") ; + printf ("==============================\n") ; + + colour = atoi (argv [1]) ; + + wiringPiSetupSys () ; + mcp23017Setup (AF_BASE, 0x20) ; + + adafruitLCDSetup (colour) ; + + lcdPosition (lcdHandle, 0, 0) ; lcdPuts (lcdHandle, "Gordon Henderson") ; + lcdPosition (lcdHandle, 0, 1) ; lcdPuts (lcdHandle, " wiringpi.com ") ; + + waitForEnter () ; + + lcdPosition (lcdHandle, 0, 1) ; lcdPuts (lcdHandle, "Adafruit RGB LCD") ; + + waitForEnter () ; + + lcdCharDef (lcdHandle, 2, newChar) ; + + lcdClear (lcdHandle) ; + lcdPosition (lcdHandle, 0, 0) ; + lcdPuts (lcdHandle, "User Char: ") ; + lcdPutchar (lcdHandle, 2) ; + + lcdCursor (lcdHandle, TRUE) ; + lcdCursorBlink (lcdHandle, TRUE) ; + + waitForEnter () ; + + lcdCursor (lcdHandle, FALSE) ; + lcdCursorBlink (lcdHandle, FALSE) ; + + speedTest () ; + + lcdClear (lcdHandle) ; + + for (;;) + { + scrollMessage (0, cols) ; + + tim = time (NULL) ; + t = localtime (&tim) ; + + sprintf (buf, "%02d:%02d:%02d", t->tm_hour, t->tm_min, t->tm_sec) ; + + lcdPosition (lcdHandle, (cols - 8) / 2, 1) ; + lcdPuts (lcdHandle, buf) ; + +// Check buttons to cycle colour + +// If Up or Down are still pushed, then skip + + if (waitForRelease) + { + if ((digitalRead (AF_UP) == LOW) || (digitalRead (AF_DOWN) == LOW)) + continue ; + else + waitForRelease = FALSE ; + } + + if (digitalRead (AF_UP) == LOW) // Pushed + { + colour = colour + 1 ; + if (colour == 8) + colour = 0 ; + setBacklightColour (colour) ; + waitForRelease = TRUE ; + } + + if (digitalRead (AF_DOWN) == LOW) // Pushed + { + colour = colour - 1 ; + if (colour == -1) + colour = 7 ; + setBacklightColour (colour) ; + waitForRelease = TRUE ; + } + + } + + return 0 ; +} diff --git a/examples/lcd.c b/examples/lcd.c index c013585..510f562 100644 --- a/examples/lcd.c +++ b/examples/lcd.c @@ -65,31 +65,59 @@ static unsigned char newChar [8] = } ; +// Global lcd handle: + +static int lcdHandle ; + +/* + * usage: + ********************************************************************************* + */ + int usage (const char *progName) { fprintf (stderr, "Usage: %s bits cols rows\n", progName) ; return EXIT_FAILURE ; } + +/* + * scrollMessage: + ********************************************************************************* + */ + static const char *message = " " "Wiring Pi by Gordon Henderson. HTTP://WIRINGPI.COM/" " " ; -void scrollMessage (int lcd, int line, int width) +void scrollMessage (int line, int width) { char buf [32] ; static int position = 0 ; + static int timer = 0 ; + + if (millis () < timer) + return ; + + timer = millis () + 200 ; strncpy (buf, &message [position], width) ; buf [width] = 0 ; - lcdPosition (lcd, 0, line) ; - lcdPuts (lcd, buf) ; + lcdPosition (lcdHandle, 0, line) ; + lcdPuts (lcdHandle, buf) ; if (++position == (strlen (message) - width)) position = 0 ; } + +/* + * pingPong: + * Bounce a character - only on 4-line displays + ********************************************************************************* + */ + static void pingPong (int lcd, int cols) { static int position = 0 ; @@ -98,13 +126,13 @@ static void pingPong (int lcd, int cols) if (dir == 0) // Setup { dir = 1 ; - lcdPosition (lcd, 0, 3) ; - lcdPutchar (lcd, '*') ; + lcdPosition (lcdHandle, 0, 3) ; + lcdPutchar (lcdHandle, '*') ; return ; } - lcdPosition (lcd, position, 3) ; - lcdPutchar (lcd, ' ') ; + lcdPosition (lcdHandle, position, 3) ; + lcdPutchar (lcdHandle, ' ') ; position += dir ; if (position == cols) @@ -119,11 +147,15 @@ static void pingPong (int lcd, int cols) ++position ; } - lcdPosition (lcd, position, 3) ; - lcdPutchar (lcd, '#') ; + lcdPosition (lcdHandle, position, 3) ; + lcdPutchar (lcdHandle, '#') ; } +/* + * waitForEnter: + ********************************************************************************* + */ static void waitForEnter (void) { @@ -131,6 +163,12 @@ static void waitForEnter (void) (void)fgetc (stdin) ; } + +/* + * The works + ********************************************************************************* + */ + int main (int argc, char *argv[]) { int i ; @@ -167,67 +205,60 @@ int main (int argc, char *argv[]) wiringPiSetup () ; if (bits == 4) - lcd = lcdInit (rows, cols, 4, 11,10, 4,5,6,7,0,0,0,0) ; + lcdHandle = lcdInit (rows, cols, 4, 11,10, 4,5,6,7,0,0,0,0) ; else - lcd = lcdInit (rows, cols, 8, 11,10, 0,1,2,3,4,5,6,7) ; + lcdHandle = lcdInit (rows, cols, 8, 11,10, 0,1,2,3,4,5,6,7) ; - if (lcd < 0) + if (lcdHandle < 0) { fprintf (stderr, "%s: lcdInit failed\n", argv [0]) ; return -1 ; } - lcdPosition (lcd, 0, 0) ; lcdPuts (lcd, "Gordon Henderson") ; + lcdPosition (lcdHandle, 0, 0) ; lcdPuts (lcdHandle, "Gordon Henderson") ; + lcdPosition (lcdHandle, 0, 1) ; lcdPuts (lcdHandle, " wiringpi.com ") ; + + waitForEnter () ; if (rows > 1) { - lcdPosition (lcd, 0, 1) ; - for (i = 0 ; i < (cols - 1) ; ++i) - lcdPutchar (lcd, '*') ; - lcdPutchar (lcd, '2') ; + lcdPosition (lcdHandle, 0, 1) ; lcdPuts (lcdHandle, " wiringpi.com ") ; if (rows == 4) { - lcdPosition (lcd, 0, 2) ; + lcdPosition (lcdHandle, 0, 2) ; for (i = 0 ; i < ((cols - 1) / 2) ; ++i) - lcdPuts (lcd, "=-") ; - lcdPuts (lcd, "=3") ; + lcdPuts (lcdHandle, "=-") ; + lcdPuts (lcdHandle, "=3") ; - lcdPosition (lcd, 0, 3) ; + lcdPosition (lcdHandle, 0, 3) ; for (i = 0 ; i < ((cols - 1) / 2) ; ++i) - lcdPuts (lcd, "-=") ; - lcdPuts (lcd, "-4") ; + lcdPuts (lcdHandle, "-=") ; + lcdPuts (lcdHandle, "-4") ; } } - sleep (2) ; + waitForEnter () ; - lcdPosition (lcd, 0, 0) ; lcdPuts (lcd, " wiringpi.com ") ; + lcdCharDef (lcdHandle, 2, newChar) ; + lcdClear (lcdHandle) ; + lcdPosition (lcdHandle, 0, 0) ; + lcdPuts (lcdHandle, "User Char: ") ; + lcdPutchar (lcdHandle, 2) ; + + lcdCursor (lcdHandle, TRUE) ; + lcdCursorBlink (lcdHandle, TRUE) ; waitForEnter () ; - lcdCharDef (lcd, 2, newChar) ; - - lcdClear (lcd) ; - lcdPosition (lcd, 0, 0) ; - lcdPuts (lcd, "User Char: ") ; - lcdPutchar (lcd, 2) ; - - lcdCursor (lcd, TRUE) ; - lcdCursorBlink (lcd, TRUE) ; - - waitForEnter () ; - - lcdCursor (lcd, FALSE) ; - lcdCursorBlink (lcd, FALSE) ; - + lcdCursor (lcdHandle, FALSE) ; + lcdCursorBlink (lcdHandle, FALSE) ; + lcdClear (lcdHandle) ; for (;;) { - delay (250) ; - - scrollMessage (lcd, 0, cols) ; + scrollMessage (0, cols) ; if (rows == 1) continue ; @@ -237,16 +268,16 @@ int main (int argc, char *argv[]) sprintf (buf, "%02d:%02d:%02d", t->tm_hour, t->tm_min, t->tm_sec) ; - lcdPosition (lcd, (cols - 8) / 2, 1) ; - lcdPuts (lcd, buf) ; + lcdPosition (lcdHandle, (cols - 8) / 2, 1) ; + lcdPuts (lcdHandle, buf) ; if (rows == 2) continue ; sprintf (buf, "%02d/%02d/%04d", t->tm_mday, t->tm_mon + 1, t->tm_year+1900) ; - lcdPosition (lcd, (cols - 10) / 2, 2) ; - lcdPuts (lcd, buf) ; + lcdPosition (lcdHandle, (cols - 10) / 2, 2) ; + lcdPuts (lcdHandle, buf) ; pingPong (lcd, cols) ; } diff --git a/examples/q2w/Makefile b/examples/q2w/Makefile new file mode 100644 index 0000000..150c825 --- /dev/null +++ b/examples/q2w/Makefile @@ -0,0 +1,81 @@ +# +# Makefile: +# wiringPi - Wiring Compatable library for the Raspberry Pi +# https://projects.drogon.net/wiring-pi +# +# Copyright (c) 2012-2013 Gordon Henderson +################################################################################# +# This file is part of wiringPi: +# Wiring Compatable library for the Raspberry Pi +# +# wiringPi is free software: you can redistribute it and/or modify +# it under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# wiringPi is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with wiringPi. If not, see . +################################################################################# + + +#DEBUG = -g -O0 +DEBUG = -O3 +CC = gcc +INCLUDE = -I/usr/local/include +CFLAGS = $(DEBUG) -Wall $(INCLUDE) -Winline -pipe + +LDFLAGS = -L/usr/local/lib +LDLIBS = -lwiringPi -lwiringPiDev -lpthread -lm + +############################################################################### + +SRC = blink.c button.c blink-io.c volts.c bright.c + +OBJ = $(SRC:.c=.o) + +BINS = $(SRC:.c=) + +all: $(BINS) + +blink: blink.o + @echo [link] + @$(CC) -o $@ blink.o $(LDFLAGS) $(LDLIBS) + +blink-io: blink-io.o + @echo [link] + @$(CC) -o $@ blink-io.o $(LDFLAGS) $(LDLIBS) + +button: button.o + @echo [link] + @$(CC) -o $@ button.o $(LDFLAGS) $(LDLIBS) + +volts: volts.o + @echo [link] + @$(CC) -o $@ volts.o $(LDFLAGS) $(LDLIBS) + +bright: bright.o + @echo [link] + @$(CC) -o $@ bright.o $(LDFLAGS) $(LDLIBS) + + +.c.o: + @echo [CC] $< + @$(CC) -c $(CFLAGS) $< -o $@ + +clean: + @echo "[Clean]" + @rm -f $(OBJ) *~ core tags $(BINS) + +tags: $(SRC) + @echo [ctags] + @ctags $(SRC) + +depend: + makedepend -Y $(SRC) + +# DO NOT DELETE diff --git a/examples/q2w/binary.c b/examples/q2w/binary.c new file mode 100644 index 0000000..3c987c6 --- /dev/null +++ b/examples/q2w/binary.c @@ -0,0 +1,79 @@ +/* + * binary.c: + * Using the Quick 2 wire 16-bit GPIO expansion board to output + * a binary counter. + * + * Copyright (c) 2012-2013 Gordon Henderson. + *********************************************************************** + * This file is part of wiringPi: + * https://projects.drogon.net/raspberry-pi/wiringpi/ + * + * wiringPi is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * wiringPi is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with wiringPi. If not, see . + *********************************************************************** + */ + +#include +#include +#include + +#define Q2W_BASE 100 + +int main (void) +{ + int i, bit ; + +// Enable the on-goard GPIO + + wiringPiSetup () ; + +// Add in the mcp23017 on the q2w board + + mcp23017Setup (Q2W_BASE, 0x20) ; + + printf ("Raspberry Pi - quite2Wire MCP23017 Test\n") ; + +// On-board button Input: + + pinMode (0, INPUT) ; + +// First 10 pins on q2w board as outputs: + + for (i = 0 ; i < 10 ; ++i) + pinMode (Q2W_BASE + i, OUTPUT) ; + +// Last pin as an input with the internal pull-up enabled + + pinMode (Q2W_BASE + 15, INPUT) ; + pullUpDnControl (Q2W_BASE + 15, PUD_UP) ; + +// Loop, outputting a binary number, +// Go faster with the button, or stop if the +// on-board button is pushed + + for (;;) + { + for (i = 0 ; i < 1024 ; ++i) + { + for (bit = 0 ; bit < 10 ; ++bit) + digitalWrite (Q2W_BASE + bit, i & (1 << bit)) ; + + while (digitalRead (0) == HIGH) // While pushed + delay (1) ; + + if (digitalRead (Q2W_BASE + 15) == HIGH) // Not Pushed + delay (100) ; + } + } + return 0 ; +} diff --git a/examples/q2w/blink-io.c b/examples/q2w/blink-io.c new file mode 100644 index 0000000..4dd4276 --- /dev/null +++ b/examples/q2w/blink-io.c @@ -0,0 +1,61 @@ +/* + * blink-io.c: + * Simple "blink" test for the Quick2Wire 16-pin IO board. + * + * Copyright (c) 2012-2013 Gordon Henderson. + *********************************************************************** + * This file is part of wiringPi: + * https://projects.drogon.net/raspberry-pi/wiringpi/ + * + * wiringPi is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * wiringPi is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with wiringPi. If not, see . + *********************************************************************** + */ + +#include +#include +#include + +#define LED 1 +#define Q2W_BASE 100 + +int main (void) +{ + +// Enable the on-goard GPIO + + wiringPiSetup () ; + +// Add in the mcp23017 on the q2w board + + mcp23017Setup (Q2W_BASE, 0x20) ; + + printf ("Raspberry Pi - Quick2Wire MCP23017 Blink Test\n") ; + +// Blink the on-board LED as well as one on the mcp23017 + + pinMode (LED, OUTPUT) ; + pinMode (Q2W_BASE + 0, OUTPUT) ; + + for (;;) + { + digitalWrite (LED, HIGH) ; + digitalWrite (Q2W_BASE + 0, HIGH) ; + delay (500) ; + digitalWrite (LED, LOW) ; + digitalWrite (Q2W_BASE + 0, LOW) ; + delay (500) ; + } + + return 0 ; +} diff --git a/examples/q2w/blink.c b/examples/q2w/blink.c new file mode 100644 index 0000000..62b694a --- /dev/null +++ b/examples/q2w/blink.c @@ -0,0 +1,50 @@ +/* + * blink.c: + * Simple "blink" test for the Quick2Wire interface board. + * + * Copyright (c) 2012-2013 Gordon Henderson. + *********************************************************************** + * This file is part of wiringPi: + * https://projects.drogon.net/raspberry-pi/wiringpi/ + * + * wiringPi is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * wiringPi is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with wiringPi. If not, see . + *********************************************************************** + */ + +#include +#include + +#define LED 1 + +int main (void) +{ + +// Enable the on-goard GPIO + + wiringPiSetup () ; + + printf ("Raspberry Pi - Quick2Wire Mainboard LED Blink Test\n") ; + + pinMode (LED, OUTPUT) ; + + for (;;) + { + digitalWrite (LED, HIGH) ; + delay (500) ; + digitalWrite (LED, LOW) ; + delay (500) ; + } + + return 0 ; +} diff --git a/examples/q2w/blink.sh b/examples/q2w/blink.sh new file mode 100755 index 0000000..2dee6c7 --- /dev/null +++ b/examples/q2w/blink.sh @@ -0,0 +1,37 @@ +#!/bin/sh +# +# blink.sh: +# Standard "blink" program in wiringPi. Blinks an LED connected +# to the LED on the Quick2Wire board +# +# Copyright (c) 2012-2013 Gordon Henderson. +####################################################################### +# This file is part of wiringPi: +# https://projects.drogon.net/raspberry-pi/wiringpi/ +# +# wiringPi is free software: you can redistribute it and/or modify +# it under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# wiringPi is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with wiringPi. If not, see . +####################################################################### + +# LED Pin - wiringPi pin 1 is BCM_GPIO 18. + +LED=1 + +gpio mode $LED out + +while true; do + gpio write $LED 1 + sleep 0.5 + gpio write $LED 0 + sleep 0.5 +done diff --git a/examples/q2w/bright.c b/examples/q2w/bright.c new file mode 100644 index 0000000..2318834 --- /dev/null +++ b/examples/q2w/bright.c @@ -0,0 +1,59 @@ +/* + * bright.c: + * Vary the Q2W LED brightness with the analog card + * + * Copyright (c) 2012-2013 Gordon Henderson. + *********************************************************************** + * This file is part of wiringPi: + * https://projects.drogon.net/raspberry-pi/wiringpi/ + * + * wiringPi is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * wiringPi is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with wiringPi. If not, see . + *********************************************************************** + */ + +#include +#include +#include + +#define LED 1 +#define Q2W_ABASE 120 + +int main (void) +{ + int value ; + +// Enable the on-goard GPIO + + wiringPiSetup () ; + +// Add in the pcf8591 on the q2w board + + pcf8591Setup (Q2W_ABASE, 0x48) ; + + printf ("Raspberry Pi - Quick2Wire Analog Test\n") ; + +// Setup the LED + + pinMode (LED, PWM_OUTPUT) ; + pwmWrite (LED, 0) ; + + for (;;) + { + value = analogRead (Q2W_ABASE + 0) ; + pwmWrite (LED, value * 4) ; + delay (10) ; + } + + return 0 ; +} diff --git a/examples/q2w/button.c b/examples/q2w/button.c new file mode 100644 index 0000000..1781f02 --- /dev/null +++ b/examples/q2w/button.c @@ -0,0 +1,63 @@ +/* + * button.c: + * Simple button test for the Quick2Wire interface board. + * + * Copyright (c) 2012-2013 Gordon Henderson. + *********************************************************************** + * This file is part of wiringPi: + * https://projects.drogon.net/raspberry-pi/wiringpi/ + * + * wiringPi is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * wiringPi is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with wiringPi. If not, see . + *********************************************************************** + */ + +#include +#include + +#define BUTTON 0 +#define LED1 1 +#define LED2 7 + +int main (void) +{ + +// Enable the on-goard GPIO + + wiringPiSetup () ; + + printf ("Raspberry Pi - Quick2Wire Mainboard Button & LED Test\n") ; + + pinMode (BUTTON, INPUT) ; + pinMode (LED1, OUTPUT) ; + pinMode (LED2, OUTPUT) ; + + digitalWrite (LED1, HIGH) ; // On-board LED on + digitalWrite (LED2, LOW) ; // 2nd LED off + + for (;;) + { + if (digitalRead (BUTTON) == HIGH) // Swap LED states + { + digitalWrite (LED1, LOW) ; + digitalWrite (LED2, HIGH) ; + while (digitalRead (BUTTON) == HIGH) + delay (1) ; + digitalWrite (LED1, HIGH) ; + digitalWrite (LED2, LOW) ; + } + delay (1) ; + } + + return 0 ; +} diff --git a/examples/q2w/volts.c b/examples/q2w/volts.c new file mode 100644 index 0000000..e091093 --- /dev/null +++ b/examples/q2w/volts.c @@ -0,0 +1,62 @@ +/* + * volts.c: + * Read in all 4 analogs on the Q2W analog board. + * + * Copyright (c) 2012-2013 Gordon Henderson. + *********************************************************************** + * This file is part of wiringPi: + * https://projects.drogon.net/raspberry-pi/wiringpi/ + * + * wiringPi is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * wiringPi is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with wiringPi. If not, see . + *********************************************************************** + */ + +#include +#include +#include + +#define LED 1 +#define Q2W_ABASE 120 + +int main (void) +{ + int value, pin ; + +// Enable the on-goard GPIO + + wiringPiSetup () ; + + pinMode (LED, OUTPUT) ; // On-board LED + +// Add in the pcf8591 on the q2w board + + pcf8591Setup (Q2W_ABASE, 0x48) ; + + printf ("Raspberry Pi - Quick2Wire Voltmeter\n") ; + + for (;;) + { + for (pin = 0 ; pin < 4 ; ++pin) + { + value = analogRead (Q2W_ABASE + pin) ; + printf (" %5.2f", (double)value * 3.3 / 255.0) ; + } + printf ("\r") ; fflush (stdout) ; + + delay (100) ; + digitalWrite (LED, !digitalRead (LED)) ; // Flicker the LED + } + + return 0 ; +} diff --git a/examples/rht03.c b/examples/rht03.c old mode 100755 new mode 100644 diff --git a/gpio/extensions.c b/gpio/extensions.c index c08d1c1..dae1eac 100644 --- a/gpio/extensions.c +++ b/gpio/extensions.c @@ -36,10 +36,13 @@ #include #include +#include #include #include #include #include +#include +#include #include "extensions.h" @@ -116,10 +119,36 @@ static int doExtensionMcp23008 (char *progName, int pinBase, char *params) } +/* + * doExtensionMcp23016: + * MCP230016- 16-bit I2C GPIO expansion chip + * mcp23016:base:i2cAddr + ********************************************************************************* + */ + +static int doExtensionMcp23016 (char *progName, int pinBase, char *params) +{ + int i2c ; + + if ((params = extractInt (progName, params, &i2c)) == NULL) + return FALSE ; + + if ((i2c < 0x03) || (i2c > 0x77)) + { + fprintf (stderr, "%s: i2c address (0x%X) out of range\n", progName, i2c) ; + return FALSE ; + } + + mcp23016Setup (pinBase, i2c) ; + + return TRUE ; +} + + /* * doExtensionMcp23017: - * MCP23008 - 16-bit I2C GPIO expansion chip - * mcp23002:base:i2cAddr + * MCP230017- 16-bit I2C GPIO expansion chip + * mcp23017:base:i2cAddr ********************************************************************************* */ @@ -211,6 +240,7 @@ static int doExtensionMcp23s17 (char *progName, int pinBase, char *params) return TRUE ; } + /* * doExtensionSr595: * Shift Register 74x595 @@ -248,6 +278,58 @@ static int doExtensionSr595 (char *progName, int pinBase, char *params) } +/* + * doExtensionPcf8574: + * Digital IO (Crude!) + * pcf8574:base:i2cAddr + ********************************************************************************* + */ + +static int doExtensionPcf8574 (char *progName, int pinBase, char *params) +{ + int i2c ; + + if ((params = extractInt (progName, params, &i2c)) == NULL) + return FALSE ; + + if ((i2c < 0x03) || (i2c > 0x77)) + { + fprintf (stderr, "%s: i2c address (0x%X) out of range\n", progName, i2c) ; + return FALSE ; + } + + pcf8574Setup (pinBase, i2c) ; + + return TRUE ; +} + + +/* + * doExtensionPcf8591: + * Analog IO + * pcf8591:base:i2cAddr + ********************************************************************************* + */ + +static int doExtensionPcf8591 (char *progName, int pinBase, char *params) +{ + int i2c ; + + if ((params = extractInt (progName, params, &i2c)) == NULL) + return FALSE ; + + if ((i2c < 0x03) || (i2c > 0x77)) + { + fprintf (stderr, "%s: i2c address (0x%X) out of range\n", progName, i2c) ; + return FALSE ; + } + + pcf8591Setup (pinBase, i2c) ; + + return TRUE ; +} + + /* * Function list ********************************************************************************* @@ -256,10 +338,13 @@ static int doExtensionSr595 (char *progName, int pinBase, char *params) struct extensionFunctionStruct extensionFunctions [] = { { "mcp23008", &doExtensionMcp23008 }, + { "mcp23016", &doExtensionMcp23016 }, { "mcp23017", &doExtensionMcp23017 }, { "mcp23s08", &doExtensionMcp23s08 }, { "mcp23s17", &doExtensionMcp23s17 }, - { "sr595", &doExtensionSr595 }, + { "sr595", &doExtensionSr595 }, + { "pcf8574", &doExtensionPcf8574 }, + { "pcf8591", &doExtensionPcf8591 }, { NULL, NULL }, } ; diff --git a/gpio/gpio.c b/gpio/gpio.c index e7099c8..4724ab3 100644 --- a/gpio/gpio.c +++ b/gpio/gpio.c @@ -895,19 +895,13 @@ void doRead (int argc, char *argv []) void doAread (int argc, char *argv []) { - int pin, val ; - if (argc != 3) { fprintf (stderr, "Usage: %s aread pin\n", argv [0]) ; exit (1) ; } - pin = atoi (argv [2]) ; - - val = analogRead (pin) ; - - printf ("%s\n", val == 0 ? "0" : "1") ; + printf ("%d\n", analogRead (atoi (argv [2]))) ; } diff --git a/wiringPi/Makefile b/wiringPi/Makefile index 8ece853..f0120bb 100644 --- a/wiringPi/Makefile +++ b/wiringPi/Makefile @@ -47,8 +47,10 @@ SRC = wiringPi.c \ piHiPri.c piThread.c \ wiringPiSPI.c wiringPiI2C.c \ softPwm.c softTone.c \ - mcp23s08.c mcp23008.c \ - mcp23s17.c mcp23017.c sr595.c pcf8574.c \ + mcp23008.c mcp23016.c mcp23017.c \ + mcp23s08.c mcp23s17.c \ + sr595.c \ + pcf8574.c pcf8591.c \ mcp3002.c mcp4802.c mcp3422.c \ drc.c @@ -95,6 +97,7 @@ install-headers: @install -m 0644 wiringPiSPI.h $(DESTDIR)$(PREFIX)/include @install -m 0644 wiringPiI2C.h $(DESTDIR)$(PREFIX)/include @install -m 0644 mcp23008.h $(DESTDIR)$(PREFIX)/include + @install -m 0644 mcp23016.h $(DESTDIR)$(PREFIX)/include @install -m 0644 mcp23017.h $(DESTDIR)$(PREFIX)/include @install -m 0644 mcp23s08.h $(DESTDIR)$(PREFIX)/include @install -m 0644 mcp23s17.h $(DESTDIR)$(PREFIX)/include @@ -103,6 +106,7 @@ install-headers: @install -m 0644 mcp3422.h $(DESTDIR)$(PREFIX)/include @install -m 0644 sr595.h $(DESTDIR)$(PREFIX)/include @install -m 0644 pcf8574.h $(DESTDIR)$(PREFIX)/include + @install -m 0644 pcf8591.h $(DESTDIR)$(PREFIX)/include .PHONEY: install install: $(DYNAMIC) install-headers @@ -129,6 +133,7 @@ uninstall: @rm -f $(DESTDIR)$(PREFIX)/include/wiringPiSPI.h @rm -f $(DESTDIR)$(PREFIX)/include/wiringPiI2C.h @rm -f $(DESTDIR)$(PREFIX)/include/mcp23008.h + @rm -f $(DESTDIR)$(PREFIX)/include/mcp23016.h @rm -f $(DESTDIR)$(PREFIX)/include/mcp23017.h @rm -f $(DESTDIR)$(PREFIX)/include/mcp23s08.h @rm -f $(DESTDIR)$(PREFIX)/include/mcp23s17.h @@ -137,6 +142,7 @@ uninstall: @rm -f $(DESTDIR)$(PREFIX)/include/mcp3422.h @rm -f $(DESTDIR)$(PREFIX)/include/sr595.h @rm -f $(DESTDIR)$(PREFIX)/include/pcf8574.h + @rm -f $(DESTDIR)$(PREFIX)/include/pcf8591.h @rm -f $(DESTDIR)$(PREFIX)/lib/libwiringPi.* @ldconfig @@ -156,12 +162,14 @@ wiringPiSPI.o: wiringPi.h wiringPiSPI.h wiringPiI2C.o: wiringPi.h wiringPiI2C.h softPwm.o: wiringPi.h softPwm.h softTone.o: wiringPi.h softTone.h -mcp23s08.o: wiringPi.h wiringPiSPI.h mcp23x0817.h mcp23s08.h mcp23008.o: wiringPi.h wiringPiI2C.h mcp23x0817.h mcp23008.h -mcp23s17.o: wiringPi.h wiringPiSPI.h mcp23x0817.h mcp23s17.h +mcp23016.o: wiringPi.h wiringPiI2C.h mcp23016.h mcp23016reg.h mcp23017.o: wiringPi.h wiringPiI2C.h mcp23x0817.h mcp23017.h +mcp23s08.o: wiringPi.h wiringPiSPI.h mcp23x0817.h mcp23s08.h +mcp23s17.o: wiringPi.h wiringPiSPI.h mcp23x0817.h mcp23s17.h sr595.o: wiringPi.h sr595.h pcf8574.o: wiringPi.h wiringPiI2C.h pcf8574.h +pcf8591.o: wiringPi.h wiringPiI2C.h pcf8591.h mcp3002.o: wiringPi.h wiringPiSPI.h mcp3002.h mcp4802.o: wiringPi.h wiringPiSPI.h mcp4802.h mcp3422.o: wiringPi.h wiringPiI2C.h mcp3422.h diff --git a/wiringPi/mcp23016.c b/wiringPi/mcp23016.c new file mode 100644 index 0000000..e5cc632 --- /dev/null +++ b/wiringPi/mcp23016.c @@ -0,0 +1,164 @@ +/* + * mcp23016.c: + * Extend wiringPi with the MCP 23016 I2C GPIO expander chip + * Copyright (c) 2013 Gordon Henderson + *********************************************************************** + * This file is part of wiringPi: + * https://projects.drogon.net/raspberry-pi/wiringpi/ + * + * wiringPi is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * wiringPi is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with wiringPi. + * If not, see . + *********************************************************************** + */ + +#include +#include + +#include "wiringPi.h" +#include "wiringPiI2C.h" +#include "mcp23016.h" + +#include "mcp23016reg.h" + + +/* + * myPinMode: + ********************************************************************************* + */ + +static void myPinMode (struct wiringPiNodeStruct *node, int pin, int mode) +{ + int mask, old, reg ; + + pin -= node->pinBase ; + + if (pin < 8) // Bank A + reg = MCP23016_IODIR0 ; + else + { + reg = MCP23016_IODIR1 ; + pin &= 0x07 ; + } + + mask = 1 << pin ; + old = wiringPiI2CReadReg8 (node->fd, reg) ; + + if (mode == OUTPUT) + old &= (~mask) ; + else + old |= mask ; + + wiringPiI2CWriteReg8 (node->fd, reg, old) ; +} + + +/* + * myDigitalWrite: + ********************************************************************************* + */ + +static void myDigitalWrite (struct wiringPiNodeStruct *node, int pin, int value) +{ + int bit, old ; + + pin -= node->pinBase ; // Pin now 0-15 + + bit = 1 << (pin & 7) ; + + if (pin < 8) // Bank A + { + old = node->data2 ; + + if (value == LOW) + old &= (~bit) ; + else + old |= bit ; + + wiringPiI2CWriteReg8 (node->fd, MCP23016_GP0, old) ; + node->data2 = old ; + } + else // Bank B + { + old = node->data3 ; + + if (value == LOW) + old &= (~bit) ; + else + old |= bit ; + + wiringPiI2CWriteReg8 (node->fd, MCP23016_GP1, old) ; + node->data3 = old ; + } +} + + +/* + * myDigitalRead: + ********************************************************************************* + */ + +static int myDigitalRead (struct wiringPiNodeStruct *node, int pin) +{ + int mask, value, gpio ; + + pin -= node->pinBase ; + + if (pin < 8) // Bank A + gpio = MCP23016_GP0 ; + else + { + gpio = MCP23016_GP1 ; + pin &= 0x07 ; + } + + mask = 1 << pin ; + value = wiringPiI2CReadReg8 (node->fd, gpio) ; + + if ((value & mask) == 0) + return LOW ; + else + return HIGH ; +} + + +/* + * mcp23016Setup: + * Create a new instance of an MCP23016 I2C GPIO interface. We know it + * has 16 pins, so all we need to know here is the I2C address and the + * user-defined pin base. + ********************************************************************************* + */ + +int mcp23016Setup (const int pinBase, const int i2cAddress) +{ + int fd ; + struct wiringPiNodeStruct *node ; + + if ((fd = wiringPiI2CSetup (i2cAddress)) < 0) + return fd ; + + wiringPiI2CWriteReg8 (fd, MCP23016_IOCON0, IOCON_INIT) ; + wiringPiI2CWriteReg8 (fd, MCP23016_IOCON1, IOCON_INIT) ; + + node = wiringPiNewNode (pinBase, 16) ; + + node->fd = fd ; + node->pinMode = myPinMode ; + node->digitalRead = myDigitalRead ; + node->digitalWrite = myDigitalWrite ; + node->data2 = wiringPiI2CReadReg8 (fd, MCP23016_OLAT0) ; + node->data3 = wiringPiI2CReadReg8 (fd, MCP23016_OLAT1) ; + + return 0 ; +} diff --git a/wiringPi/mcp23016.h b/wiringPi/mcp23016.h new file mode 100644 index 0000000..f9b5cc5 --- /dev/null +++ b/wiringPi/mcp23016.h @@ -0,0 +1,33 @@ +/* + * mcp23016.h: + * Extend wiringPi with the MCP 23016 I2C GPIO expander chip + * Copyright (c) 2013 Gordon Henderson + *********************************************************************** + * This file is part of wiringPi: + * https://projects.drogon.net/raspberry-pi/wiringpi/ + * + * wiringPi is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * wiringPi is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with wiringPi. + * If not, see . + *********************************************************************** + */ + +#ifdef __cplusplus +extern "C" { +#endif + +extern int mcp23016Setup (const int pinBase, const int i2cAddress) ; + +#ifdef __cplusplus +} +#endif diff --git a/wiringPi/mcp23016reg.h b/wiringPi/mcp23016reg.h new file mode 100644 index 0000000..9aea92d --- /dev/null +++ b/wiringPi/mcp23016reg.h @@ -0,0 +1,48 @@ +/* + * mcp23016: + * Copyright (c) 2012-2013 Gordon Henderson + * + * Header file for code using the MCP23016 GPIO expander + * chip. + *********************************************************************** + * This file is part of wiringPi: + * https://projects.drogon.net/raspberry-pi/wiringpi/ + * + * wiringPi is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * wiringPi is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with wiringPi. + * If not, see . + *********************************************************************** + */ + +// MCP23016 Registers + +#define MCP23016_GP0 0x00 +#define MCP23016_GP1 0x01 +#define MCP23016_OLAT0 0x02 +#define MCP23016_OLAT1 0x03 +#define MCP23016_IPOL0 0x04 +#define MCP23016_IPOL1 0x05 +#define MCP23016_IODIR0 0x06 +#define MCP23016_IODIR1 0x07 +#define MCP23016_INTCAP0 0x08 +#define MCP23016_INTCAP1 0x09 +#define MCP23016_IOCON0 0x0A +#define MCP23016_IOCON1 0x0B + +// Bits in the IOCON register + +#define IOCON_IARES 0x01 + +// Default initialisation mode + +#define IOCON_INIT 0 diff --git a/wiringPi/pcf8574.c b/wiringPi/pcf8574.c index ce9c533..c172d1c 100644 --- a/wiringPi/pcf8574.c +++ b/wiringPi/pcf8574.c @@ -1,6 +1,6 @@ /* * pcf8574.c: - * Extend wiringPi with the PFC8574 I2C GPIO expander chip + * Extend wiringPi with the PCF8574 I2C GPIO expander chip * Copyright (c) 2013 Gordon Henderson *********************************************************************** * This file is part of wiringPi: @@ -33,7 +33,7 @@ /* * myPinMode: - * The PFC8574 is an odd chip - the pins are effectively bi-directional, + * The PCF8574 is an odd chip - the pins are effectively bi-directional, * however the pins should be drven high when used as an input pin... * So, we're effectively copying digitalWrite... ********************************************************************************* @@ -100,7 +100,7 @@ static int myDigitalRead (struct wiringPiNodeStruct *node, int pin) /* * pcf8574Setup: - * Create a new instance of a PFC8574 I2C GPIO interface. We know it + * Create a new instance of a PCF8574 I2C GPIO interface. We know it * has 8 pins, so all we need to know here is the I2C address and the * user-defined pin base. ********************************************************************************* @@ -116,11 +116,11 @@ int pcf8574Setup (const int pinBase, const int i2cAddress) node = wiringPiNewNode (pinBase, 8) ; - node->fd = fd ; - node->pinMode = myPinMode ; - node->digitalRead = myDigitalRead ; - node->digitalWrite = myDigitalWrite ; - node->data2 = wiringPiI2CRead (fd) ; + node->fd = fd ; + node->pinMode = myPinMode ; + node->digitalRead = myDigitalRead ; + node->digitalWrite = myDigitalWrite ; + node->data2 = wiringPiI2CRead (fd) ; return 0 ; } diff --git a/wiringPi/pcf8574.h b/wiringPi/pcf8574.h index 3cad2dd..8e2d818 100644 --- a/wiringPi/pcf8574.h +++ b/wiringPi/pcf8574.h @@ -1,6 +1,6 @@ /* - * pfc8574.h: - * Extend wiringPi with the PFC8574 I2C GPIO expander chip + * pcf8574.h: + * Extend wiringPi with the PCF8574 I2C GPIO expander chip * Copyright (c) 2013 Gordon Henderson *********************************************************************** * This file is part of wiringPi: @@ -26,7 +26,7 @@ extern "C" { #endif -extern int pfc8574Setup (const int pinBase, const int i2cAddress) ; +extern int pcf8574Setup (const int pinBase, const int i2cAddress) ; #ifdef __cplusplus } diff --git a/wiringPi/pcf8591.c b/wiringPi/pcf8591.c new file mode 100644 index 0000000..0c86056 --- /dev/null +++ b/wiringPi/pcf8591.c @@ -0,0 +1,90 @@ +/* + * pcf8591.c: + * Extend wiringPi with the PCF8591 I2C GPIO Analog expander chip + * The chip has 1 8-bit DAC and 4 x 8-bit ADCs + * Copyright (c) 2013 Gordon Henderson + *********************************************************************** + * This file is part of wiringPi: + * https://projects.drogon.net/raspberry-pi/wiringpi/ + * + * wiringPi is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * wiringPi is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with wiringPi. + * If not, see . + *********************************************************************** + */ + +#include + +#include "wiringPi.h" +#include "wiringPiI2C.h" + +#include "pcf8591.h" + + +/* + * myAnalogWrite: + ********************************************************************************* + */ + +static void myAnalogWrite (struct wiringPiNodeStruct *node, int pin, int value) +{ + unsigned char b [2] ; + b [0] = 0x40 ; + b [1] = value & 0xFF ; + write (node->fd, b, 2) ; +} + + +/* + * myAnalogRead: + ********************************************************************************* + */ + +static int myAnalogRead (struct wiringPiNodeStruct *node, int pin) +{ + int x ; + + wiringPiI2CWrite (node->fd, 0x40 | ((pin - node->pinBase) & 3)) ; + + x = wiringPiI2CRead (node->fd) ; // Throw away the first read + x = wiringPiI2CRead (node->fd) ; + + return x ; +} + + +/* + * pcf8591Setup: + * Create a new instance of a PCF8591 I2C GPIO interface. We know it + * has 4 pins, (4 analog inputs and 1 analog output which we'll shadow + * input 0) so all we need to know here is the I2C address and the + * user-defined pin base. + ********************************************************************************* + */ + +int pcf8591Setup (const int pinBase, const int i2cAddress) +{ + int fd ; + struct wiringPiNodeStruct *node ; + + if ((fd = wiringPiI2CSetup (i2cAddress)) < 0) + return fd ; + + node = wiringPiNewNode (pinBase, 4) ; + + node->fd = fd ; + node->analogRead = myAnalogRead ; + node->analogWrite = myAnalogWrite ; + + return 0 ; +} diff --git a/wiringPi/pcf8591.h b/wiringPi/pcf8591.h new file mode 100644 index 0000000..6b44ccf --- /dev/null +++ b/wiringPi/pcf8591.h @@ -0,0 +1,33 @@ +/* + * pcf8591.h: + * Extend wiringPi with the PCF8591 I2C GPIO Analog expander chip + * Copyright (c) 2013 Gordon Henderson + *********************************************************************** + * This file is part of wiringPi: + * https://projects.drogon.net/raspberry-pi/wiringpi/ + * + * wiringPi is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation, either version 3 of the + * License, or (at your option) any later version. + * + * wiringPi is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with wiringPi. + * If not, see . + *********************************************************************** + */ + +#ifdef __cplusplus +extern "C" { +#endif + +extern int pcf8591Setup (const int pinBase, const int i2cAddress) ; + +#ifdef __cplusplus +} +#endif diff --git a/wiringPi/wiringPi.h b/wiringPi/wiringPi.h index 600c851..600b318 100644 --- a/wiringPi/wiringPi.h +++ b/wiringPi/wiringPi.h @@ -21,6 +21,9 @@ *********************************************************************** */ +#ifndef __WIRING_PI_H__ +#define __WIRING_PI_H__ + // Handy defines // Deprecated @@ -176,3 +179,5 @@ extern unsigned int micros (void) ; #ifdef __cplusplus } #endif + +#endif diff --git a/wiringPi/wiringPiI2C.c b/wiringPi/wiringPiI2C.c index d370b60..9e9ccf1 100644 --- a/wiringPi/wiringPiI2C.c +++ b/wiringPi/wiringPiI2C.c @@ -150,7 +150,7 @@ int wiringPiI2CReadReg16 (int fd, int reg) if (i2c_smbus_access (fd, I2C_SMBUS_READ, reg, I2C_SMBUS_WORD_DATA, &data)) return -1 ; else - return data.byte & 0xFF ; + return data.byte & 0xFFFF ; }